function getMatrixTransform(matrix, point) {
  var x = point.x * matrix.m11 + point.y * matrix.m21 + point.z * matrix.m31 + point.w * matrix.m41;
  var y = point.x * matrix.m12 + point.y * matrix.m22 + point.z * matrix.m32 + point.w * matrix.m42;
  var w = point.x * matrix.m13 + point.y * matrix.m23 + point.z * matrix.m33 + point.w * matrix.m43;
  var z = point.x * matrix.m14 + point.y * matrix.m24 + point.z * matrix.m34 + point.w * matrix.m44;
  return new DOMPoint(x, y, w, z)
}

test(function() {
  checkDOMPoint(new DOMPoint(), {x:0, y:0, z:0, w:1});
},'test DOMPoint Constructor no args');
test(function() {
  checkDOMPoint(new DOMPoint(1), {x:1, y:0, z:0, w:1});
},'test DOMPoint Constructor one args');
test(function() {
  checkDOMPoint(new DOMPoint(1, 2), {x:1, y:2, z:0, w:1});
},'test DOMPoint Constructor two args');
test(function() {
  checkDOMPoint(new DOMPoint(1, 2, 3), {x:1, y:2, z:3, w:1});
},'test DOMPoint Constructor three args');
test(function() {
  checkDOMPoint(new DOMPoint(1, 2, 3, 4), {x:1, y:2, z:3, w:4});
},'test DOMPoint Constructor four args');
test(function() {
  checkDOMPoint(new DOMPoint(1, 2, 3, 4, 5), {x:1, y:2, z:3, w:4});
},'test DOMPoint Constructor more then four args');
test(function() {
  checkDOMPoint(new DOMPoint(1, undefined), {x:1, y:0, z:0, w:1});
},'test DOMPoint Constructor with undefined');
// test(function() {
//   checkDOMPoint(new DOMPoint("a", "b"), {x:NaN, y:NaN, z:0, w:1});
// },'test DOMPoint Constructor with string'); //TODO
// test(function() {
//   checkDOMPoint(new DOMPoint({}), {x:NaN, y:0, z:0, w:1});
// },'test DOMPoint Constructor with empty object'); //TODO
test(function() {
  checkDOMPoint(DOMPoint.fromPoint(new DOMPoint({})), {x:0, y:0, z:0, w:1});
},'test DOMPoint fromPoint with empty object');
test(function() {
  checkDOMPoint(DOMPoint.fromPoint(new DOMPoint({x:1})), {x:1, y:0, z:0, w:1});
},'test DOMPoint fromPoint with x');
test(function() {
  checkDOMPoint(DOMPoint.fromPoint(new DOMPoint({x:1, y:2})), {x:1, y:2, z:0, w:1});
},'test DOMPoint fromPoint with x, y');
test(function() {
  checkDOMPoint(DOMPoint.fromPoint(new DOMPoint({x:1, y:2, z:3})), {x:1, y:2, z:3, w:1});
},'test DOMPoint fromPoint with x, y, z');
test(function() {
  checkDOMPoint(DOMPoint.fromPoint(new DOMPoint({x:1, y:2, z:3, w:4})), {x:1, y:2, z:3, w:4});
},'test DOMPoint fromPoint with x, y, z, w');
test(function() {
  checkDOMPoint(DOMPoint.fromPoint(new DOMPoint({x:1, y:2, z:3, w:4, v:5})), {x:1, y:2, z:3, w:4});
},'test DOMPoint fromPoint with x, y, z, w, v');
test(function() {
  checkDOMPoint(DOMPoint.fromPoint(new DOMPoint({x:1, z:3})), {x:1, y:0, z:3, w:1});
},'test DOMPoint fromPoint with x, z');
test(function() {
  checkDOMPoint(DOMPoint.fromPoint(new DOMPoint({x:1, y: undefined, z:3})), {x:1, y:0, z:3, w:1});
},'test DOMPoint fromPoint with undefined value');
test(function() {
  var point = new DOMPoint(5, 4);
  var matrix = new DOMMatrix([2, 0, 0, 2, 10, 10]);
  var result = point.matrixTransform(matrix);
  var expected = getMatrixTransform(matrix, point);
  checkDOMPoint(result, expected);
},'test DOMPoint matrixTransform');
test(function() {
  var p = new DOMPoint(0, 0, 0, 1);
  p.x = undefined;
  p.y = undefined;
  p.z = undefined;
  p.w = undefined;
  checkDOMPoint(p, {x:NaN, y:NaN, z:NaN, w:NaN});
},'test DOMPoint Attributes undefined');
test(function() {
  var p = new DOMPoint(0, 0, 0, 1);
  p.x = NaN;
  p.y = Number.POSITIVE_INFINITY;
  p.z = Number.NEGATIVE_INFINITY;
  p.w = Infinity;
  checkDOMPoint(p, {x:NaN, y:Infinity, z:-Infinity, w:Infinity});
},'test DOMPoint Attributes NaN Infinity');
test(function() {
  checkDOMPoint(new DOMPointReadOnly(), {x:0, y:0, z:0, w:1});
},'test DOMPointReadOnly Constructor no args');
test(function() {
  checkDOMPoint(new DOMPointReadOnly(1), {x:1, y:0, z:0, w:1});
},'test DOMPointReadOnly Constructor one args');
test(function() {
  checkDOMPoint(new DOMPointReadOnly(1, 2), {x:1, y:2, z:0, w:1});
},'test DOMPointReadOnly Constructor two args');
test(function() {
  checkDOMPoint(new DOMPointReadOnly(1, 2, 3), {x:1, y:2, z:3, w:1});
},'test DOMPointReadOnly Constructor three args');
test(function() {
  checkDOMPoint(new DOMPointReadOnly(1, 2, 3, 4), {x:1, y:2, z:3, w:4});
},'test DOMPointReadOnly Constructor four args');
test(function() {
  checkDOMPoint(new DOMPointReadOnly(1, 2, 3, 4, 5), {x:1, y:2, z:3, w:4});
},'test DOMPointReadOnly Constructor more then four args');
test(function() {
  checkDOMPoint(new DOMPointReadOnly(1, undefined), {x:1, y:0, z:0, w:1});
},'test DOMPointReadOnly Constructor with undefined');
// test(function() {
//   checkDOMPoint(new DOMPointReadOnly("a", "b"), {x:NaN, y:NaN, z:0, w:1});
// },'test DOMPointReadOnly Constructor with string'); // TODO
// test(function() {
//   checkDOMPoint(new DOMPointReadOnly({}), {x:NaN, y:0, z:0, w:1});
// },'test DOMPointReadOnly Constructor with object'); // TODO
test(function() {
  checkDOMPoint(DOMPointReadOnly.fromPoint(new DOMPoint({})), {x:0, y:0, z:0, w:1});
},'test DOMPointReadOnly fromPoint with empty object');
test(function() {
  checkDOMPoint(DOMPointReadOnly.fromPoint(new DOMPoint({x:1})), {x:1, y:0, z:0, w:1});
},'test DOMPointReadOnly fromPoint with x');
test(function() {
  checkDOMPoint(DOMPointReadOnly.fromPoint(new DOMPoint({x:1, y:2})), {x:1, y:2, z:0, w:1});
},'test DOMPointReadOnly fromPoint with x, y');
test(function() {
  checkDOMPoint(DOMPointReadOnly.fromPoint(new DOMPoint({x:1, y:2, z:3})), {x:1, y:2, z:3, w:1});
},'test DOMPointReadOnly fromPoint with x, y, z');
test(function() {
  checkDOMPoint(DOMPointReadOnly.fromPoint(new DOMPoint({x:1, y:2, z:3, w:4})), {x:1, y:2, z:3, w:4});
},'test DOMPointReadOnly fromPoint with x, y, z, w');
test(function() {
  checkDOMPoint(DOMPointReadOnly.fromPoint(new DOMPoint({x:1, y:2, z:3, w:4, v:5})), {x:1, y:2, z:3, w:4});
},'test DOMPointReadOnly fromPoint with x, y, z, w, v');
test(function() {
  checkDOMPoint(DOMPointReadOnly.fromPoint(new DOMPoint({x:1, z:3})), {x:1, y:0, z:3, w:1});
},'test DOMPointReadOnly fromPoint with x, z');
test(function() {
  checkDOMPoint(DOMPointReadOnly.fromPoint(new DOMPoint({x:1, y: undefined, z:3})), {x:1, y:0, z:3, w:1});
},'test DOMPointReadOnly fromPoint with undefined value');
test(function() {
  var point = new DOMPointReadOnly(5, 4);
  var matrix = new DOMMatrix([1, 2, 3, 4, 5, 6]);
  var result = point.matrixTransform(matrix);
  var expected = getMatrixTransform(matrix, point);
  checkDOMPoint(result, expected);
},'test DOMPointReadOnly matrixTransform');
test(function() {
  var p = new DOMPointReadOnly(0, 0, 0, 1);
  p.x = undefined;
  p.y = undefined;
  p.z = undefined;
  p.w = undefined;
  checkDOMPoint(p, {x:0, y:0, z:0, w:1});
},'test DOMPointReadOnly Attributes undefined');

function checkDOMPoint(p, exp) {
  assert_equals(p.x, exp.x, "x is not matched");
  assert_equals(p.y, exp.y, "y is not matched");
  assert_equals(p.z, exp.z, "z is not matched");
  assert_equals(p.w, exp.w, "w is not matched");
}